XMF Bluetooth Speaker  Mobile Power, Flashlight, Hands Free TF Card Music Player, blue New Bluetooth V4.0 technology, Compatible with all Bluetooth-enabled devices. Easily Plays music with bass effect via bluetooth, Micro SD card (TF card) or FM radio Built in 4000 mAh rechargeable battery lasts up to 10 hours and charge for your cellphonecan output power to external devices via USB port as a powerbank; Connect any non-Bluetooth device via 3.5mm port LED Flashlight make you can walk on the dark and make SOS signal when you lost your way It can be easily mounted on the bike by bracket and Silicone protective sleeve ensure waterproof and shockproof. Optimized the passive radiator for better bass and sound quality. Dustproof, waterproof, shockproof speakermobile power, flashlight, music, hands-free function